From b4a712279f7b81e959f9921a94b7a3253c362a77 Mon Sep 17 00:00:00 2001
From: Jianjun Wang <jianjun.wang@mediatek.com>
Date: Wed, 14 Jul 2021 15:41:20 +0800
Subject: [PATCH] soc/mediatek/mt8195: Enable PCIe support

Enable PCIe support for mt8195.

TEST=Build pass and boot up to kernel successfully via SSD on Dojo
board, here is the SSD information in boot log:
 == NVME IDENTIFY CONTROLLER DATA ==
    PCI VID   : 0x15b7
    PCI SSVID : 0x15b7
    SN        : 21517J440114
    MN        : WDC PC SN530 SDBPTPZ-256G-1006
    RAB       : 0x4
    AERL      : 0x7
    SQES      : 0x66
    CQES      : 0x44
    NN        : 0x1
Identified NVMe model WDC PC SN530 SDBPTPZ-256G-1006

BUG=b:178565024

Signed-off-by: Jianjun Wang <jianjun.wang@mediatek.com>
Change-Id: I314572955f1021abe9f2f0f4635670135ed08fff
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56793
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
---
 src/soc/mediatek/mt8195/Kconfig |  1 +
 src/soc/mediatek/mt8195/soc.c   | 14 +++++++++++++-
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/src/soc/mediatek/mt8195/Kconfig b/src/soc/mediatek/mt8195/Kconfig
index d1cb09be87..dab1590aa1 100644
--- a/src/soc/mediatek/mt8195/Kconfig
+++ b/src/soc/mediatek/mt8195/Kconfig
@@ -10,6 +10,7 @@ config SOC_MEDIATEK_MT8195
 	select HAVE_UART_SPECIAL
 	select SOC_MEDIATEK_COMMON
 	select DPM_FOUR_CHANNEL
+	select PCI
 
 if SOC_MEDIATEK_MT8195
 
diff --git a/src/soc/mediatek/mt8195/soc.c b/src/soc/mediatek/mt8195/soc.c
index d28f668579..995aadc8db 100644
--- a/src/soc/mediatek/mt8195/soc.c
+++ b/src/soc/mediatek/mt8195/soc.c
@@ -2,6 +2,7 @@
 
 #include <bootmem.h>
 #include <device/device.h>
+#include <device/pci.h>
 #include <soc/apusys.h>
 #include <soc/devapc.h>
 #include <soc/dfd.h>
@@ -9,6 +10,7 @@
 #include <soc/hdmi.h>
 #include <soc/mcupm.h>
 #include <soc/mmu_operations.h>
+#include <soc/pcie.h>
 #include <soc/sspm.h>
 #include <soc/ufs.h>
 #include <symbols.h>
@@ -44,9 +46,19 @@ static struct device_operations soc_ops = {
 	.init = soc_init,
 };
 
+static struct device_operations pci_domain_ops = {
+	.read_resources = &mtk_pcie_domain_read_resources,
+	.set_resources = &mtk_pcie_domain_set_resources,
+	.scan_bus = &pci_domain_scan_bus,
+	.enable = &mtk_pcie_domain_enable,
+};
+
 static void enable_soc_dev(struct device *dev)
 {
-	dev->ops = &soc_ops;
+	if (dev->path.type == DEVICE_PATH_CPU_CLUSTER)
+		dev->ops = &soc_ops;
+	else if (dev->path.type == DEVICE_PATH_DOMAIN)
+		dev->ops = &pci_domain_ops;
 }
 
 struct chip_operations soc_mediatek_mt8195_ops = {